Method for implementing airborne variable pressure hydraulic energy system

Abstract

The invention discloses a method for implementing an airborne variable pressure hydraulic energy system. A hydraulic energy system is provided with a hydraulic pump, a hydraulic energy management control unit, and a vibration, temperature, pollution and pressure sensor group, wherein the management control unit consists of a hydraulic energy controller and a hydraulic pump controller; the hydraulic energy controller receives a plane bus signal and a flight state signal transmitted by a flight control system and sends a working state command to the hydraulic pump; the vibration, temperature, pollution and pressure sensor group senses the working state of the hydraulic pump and transmits monitored data to the hydraulic pump controller and performs fault diagnosis and fault isolation on the hydraulic pump; and the airborne variable pressure hydraulic energy system adopts a dual-pump parallel design mode. By using the method, the system can automatically regulate output flow and output pressure according to external load demand and can convert and work reliably in a plurality of working modes, thereby improving the energy utilization efficiency of a hydraulic system, reducing the thermal power loss of the system, and prolonging the service lives of the hydraulic system and accessories.

Description

technical field [0001] The invention belongs to the hydraulic energy system design technology and relates to the innovation of the design method of the variable pressure hydraulic energy system of an aircraft. Background technique [0002] At present, the airborne hydraulic system is developing towards high pressure and high power. While the pressure level of the hydraulic energy system is continuously increasing and the dynamic performance of the system is continuously optimized, because the traditional hydraulic energy system still adopts the design method of constant pressure and variable flow, so The reactive power of the system itself is also increasing. These reactive powers are not used by the hydraulic system, but are converted into heat and lost in vain. On the other hand, in order to effectively reduce the impact of heat generation on the hydraulic system, it is necessary to set Special heat dissipation devices, these heat dissipation devices need to use other medi...

AI Technical Summary

Problems solved by technology

[0002] At present, the airborne hydraulic system is developing towards high pressure and high power. While the pressure level of the hydraulic energy system is continuously increasing and the dynamic performance of the system is continuously optimized, because the traditional hydraulic energy system still adopts the design method of constant pressure and variable flow, so The reactive power of the system itself is also increasing. These reactive powers are not used by the hydraulic system, but are converted into heat and lost in vain. On the other hand, in order to effectively reduce the impact of heat generation on the hydraulic system, it is necessary to set Special heat dissipation devices, these heat dissipation devices need to use other media as heat sinks for heat exchange, and the current method of using fuel oil or ram air for heat dissipation has gradually reached the limit that can be tolerated, if other effective control measures are not taken, then It will inevitably increase the work risk of other systems on the machine; in addition, the hydraulic energy system will also produce a large amount of pollutant particles when it works for a long time. These pollutants are not only the performance of the internal wear of the hydraulic pump, but also when these pollutants enter the system , will also seriously affect the working life and reliability of other components

In order to effectively remove the influence of these factors on system performance, it is necessary to add corresponding system accessories to control temperature and pollution, which increases the system composition and increases the complexity of system design.

[0003] In short, the traditional constant pressure and variable flow hydraulic energy system has shortcomings such as low energy utilization efficiency, large amount of heat and pollution generated by the system itself, and complex system design, and needs to be improved to overcome the above problems

Images